ASTM_D_3703_-_18.pdf

Designation:D370318Standard Test Method forHydroperoxide Number of Aviation Turbine Fuels,Gasolineand Diesel Fuels1This standard is issued under the fixed designation D3703;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method covers the determination of the hy-droperoxide content expressed as hydroperoxide number ofaviation turbine,gasoline and diesel fuels.1.2 The range of hydroperoxide number included in theprecision statement is 0 mg kg to 50 mg kg active oxygen ashydroperoxide.1.3 The interlaboratory study to establish the precision ofthis test method consisted of spark-ignition engine fuels(regular,premium and California Cleaner-Burning gasoline),aviation gasoline,jet fuel,ultra low sulfur diesel,and biodiesel.However,biodiesel was not included in the precision calcula-tion because of the large differences in results within labs andbetween labs.1.4 This test method detects hydroperoxides such as t-butylhydroperoxide and cumene hydroperoxide.It does not detectsterically-hindered hydroperoxides such as dicumyl and di-t-butyl hydroperoxides1.5 Di-alkyl hydroperoxides added commercially to dieselfuels are not detected by this test method.1.6 The values stated in SI units are to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.7 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.For specific warning statements,see 7.3,7.6,9.2,and AnnexA1.1.8 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1193 Specification for Reagent WaterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD6447 Test Method for Hydroperoxide Number of AviationTurbine Fuels by Voltammetric Analysis2.2 Other Standards:CRC Report No.559 Determination of the HydroperoxidePotential of Jet Fuels34500-C1 B.Iodometric Method IStandard Methods forthe Examination of Water and Wastewater43.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 hydroperoxide,norganic peroxide having the gener-alized formula ROOH.3.1.1.1 DiscussionThis test method detects hydroperox-ides such as t-butyl hydroperoxide(CH3)3COOH and cumenehydroperoxide C6H5C(CH3)2OOH.It does not detectsterically-hindered hydroperoxides such as dicumyl and di-t-butyl hydroperoxides.3.1.2 hydroperoxide number,nan indication of the quan-tity of oxidizing constituents present in certain liquid fuels asdetermined by this test method.3.1.2.1 DiscussionThe higher the quantity of oxidizingconstituents in the fuels,the higher the hydroperoxide number.1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.05 on Properties of Fuels,Petroleum Coke and Carbon Material.Current edition approved April 1,2018.Published April 2018.Originallyapproved in 1978.Last previous edition approved in 2013 as D3703 13.DOI:10.1520/D3703-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from the Coordinating Research Council,Inc.,5755 North PointPkwy,Suite 265,Alpharetta,GA 30022,http:/www.crcao.org.4Published by the American Health Assoc.,the American Water Works Assoc.and Water Environment Federation.Available from American Public HealthPublication Sales,P.O.Box 753,Waldorf,MD 206040753.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 4.Summary of Test Method4.1 Aquantityofsampledissolvedin2,2,4-trimethylpentane is contacted with aqueous potassium iodidesolution.The hydropero